BOZEMAN, Mont. -

According to court documents, a 14-year-old boy accused of bringing two guns to Harrison High School last week said he considered using them in a school shooting "for political reasons."

"[He] stated that he wanted to prove to people that you don't need an assault rifle to shoot up a school," the court documents say. "[He] was going to show people that it could be done with a couple of handguns."

Officers say the boy's backpack held an unloaded .22 caliber handgun, 10 rounds of .22 ammunition, a loaded .357 Magnum and 37 rounds of .357 ammunition. The boy reportedly had the weapons with him all day at school. He was arrested after hours on Friday, January 28.

According to prosecutors, the boy said he had decided not to fire the guns at school, and was instead planning to run away and live in the mountains, using the weapons to hunt food.

According to court documents, the boy showed two students the guns.

School Superintendent Fred Hofman said he and his staff learned about the handguns when one of them came forward with the information.

"It took a lot of courage on her part to come forward with the information and I'm very glad she did," said Hofman.

The witness reportedly said in her statement that the boy threatened to kill her if she told a teacher what she'd seen.

The 14-year-old allegedly stole the guns from his father.